GENERAL DESCRIPTION

The MSM6791 can be used as a memory for voice data by connecting OKI solid-state recording and playback ICs (MSM6688 and MSM6788).

FEATURES

• DRAM (· 1-bit configuration)

1M-bit DRAM (MSM511000A, MSM511001A) : 8 pcs. can be connected.

4M-bit DRAM (MSM514100A, MSM514101A) : 8 pcs. can be connected.

16M-bit DRAM (MSM5116100A) : 2 pcs. can be connected.

Note: MSM511002A/MSM514102A that corresponds to a static column mode cannot be used.

• Power supply voltage : 5V single rail

• Built-in refresh circuit (RAS only refresh)

• Original oscillation frequency: 8MHz

• Bit rates: 10kbps, 12.5kbps, 16kbps in MSM6788

connection (8kHz sampling fixation)

7.5kbps, 9.4kbps, 12kbps in MSM6788

connection (6kHz sampling fixation)

16kbps~32kbps in MSM6688 connection

(4kHz~8kHz sampling)

• Package:

44-pin plastic QFP (QFP44-P-910-2K) (Product name : MSM6791GS-2K)